What problem does it solve? Jumping straight into code without a plan leads to wrong assumptions, missed edge cases, and wasted implementation effort. This Skill produces a thorough, ready-to-execute plan for features, bug fixes, and refactors before any code is written. ## Core Features & Use Cases - Codebase Research: Explores relevant files, patterns, and integration points so the plan is anchored in the actual code rather than assumptions. - Structured Plan Drafting: Produces a plan with goal, file-level changes, numbered actionable steps, tests, edge cases, and assumptions. - Collaborative Review: Iterates with the user on open decisions and vague steps, then saves the confirmed result to PLAN.md. - Use Case: Before adding a new authentication flow, use this Skill to map the existing middleware, draft step-by-step changes with exact file paths, and confirm the approach before implementing. ## Quick Start Ask the AI to help you plan a feature or refactor before implementing it, for example by saying "let's plan how to add token refresh to the auth module".